Checking visual voicemail on a PC??

Trying to work from home here, and manage the business voicemails. It looks as if there was once a Windows version of the visual voicemail app. There are references to it on the ATT website, but I can not find it anywhere. Would love it if this were available.

Yes, I know voicemail can be checked the old timey way with a phone. And yes, I can use the website, but two big frustrations. One that it is comically outdated. When you try to play a message, it asks for the "QuickTime Plugin??". Is it 1998 again? Sure you can download the file and play it, but that's clunky. The other annoyance is that it logs me out every ten minutes. If I could just make it stay logged in, that would be a big plus.